Plastic encapsulated microcircuits (PEMs) find their main application
in commercial and telecommunication electronics. The advantages of PEM
s in cost, size, weight, performance, and market lead-time, have attra
cted 97% of the market share of worldwide microcircuit sales. However,
PEMs have always been resisted in US Government and military applicat
ions due to the perception that PEM reliability is low. This paper sur
veys plastic packaging with respect to the issues of reliability, mark
et lead-time, performance, cost, and weight as a means to guide part-s
election and system-design.